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Pericarditis

What is pericarditis?

The pericardium helps protect the heart from infection. It consists of 2 thin layers of tissue with a small amount of fluid between them. When these layers become inflamed, they can rub against the heart. This causes chest pain. Pericarditis most often happens after a respiratory infection. It occurs in people of all ages, but is more common in men ages 20 to 50 years.

What are the symptoms of pericarditis?

Pericarditis can be short-term (acute) or long-term (chronic). The acute type occurs suddenly and typically lasts days or up to 3 weeks. The chronic type develops over time and lasts for more than 3 months. Symptoms can vary between the types.

  • Symptoms of acute pericarditis may include:

    • Sharp pain in the center or left side of the chest. The pain is worse when taking a deep breath and may get better when sitting up or leaning forward.

    • Fever

    • Weakness

    • Trouble breathing

    • Fluttering heartbeat (palpitations)

    • Coughing

  • Symptoms of chronic pericarditis may include:

    • Tiredness

    • Coughing

    • Shortness of breath

    • Swelling of the stomach and legs (in severe cases)

    • Low blood pressure (in severe cases)

    • Chest pain that gets worse by lying down or with deep breathing and gets better when sitting up and leaning forward

What causes pericarditis?

In many cases, the cause of this condition is unknown (idiopathic pericarditis).These are possible causes:

  • Viral infection. This is a common cause, often after a viral respiratory infection

  • Bacterial or fungal infection

  • Autoimmune diseases such as scleroderma and lupus

  • Recovery from heart attack

  • Injury or surgery to the chest, esophagus, or heart

  • Radiation treatment to the chest

  • Certain types of cancer

  • HIV/AIDS

  • Medicines that suppress the immune system

  • Kidney failure

How is pericarditis diagnosed?

The doctor will review your health history and ask you to describe your symptoms. You’ll also have a physical exam. Your doctor will listen to your heart to see if it makes certain sounds called pericardial rub. You may have these tests:

  • Electrocardiogram (ECG). This test records the electrical activity of your heart. During an ECG, small sticky pads (electrodes) are placed on your chest, arms, and legs. Wires connect the pads to a machine, which records your heart's electrical signals. In many cases, pericarditis can be diagnosed quickly with just an ECG when you have symptoms.

  • Lab tests. Samples of blood or pericardial fluid may be taken and tested in a lab. These tests can help determine the cause of pericarditis.

  • Imaging tests of the heart or chest. These may include X-ray, MRI, and CT. They create pictures of the heart or the inside of the chest. An MRI scan uses magnets and radio waves. A CT scan uses X-rays and a computer.

  • Echocardiogram (echo).  This test creates a moving picture of the heart. During an echo, a probe moved over the chest sends out harmless sound waves. These create a picture that shows the size and shape of the heart. It shows how well the heart is working. It also shows whether fluid has built up around the heart.

  • Radionuclide scanning or nuclear medicine scanning). This test creates a picture showing the structure of the heart. It also shows how well the heart is functioning. A low-level radioactive substance is injected into a vein or taken by mouth. The substance collects in the heart. There, it gives off gamma rays (similar to X-rays). A special camera takes pictures of the gamma rays.

How is pericarditis treated?

Treatment depends on how severe the condition is. Treatment can address the symptoms or the cause of pericarditis. Or it can address complications the condition may cause.

  • Treatment of symptoms. For minor symptoms, rest may be the only treatment needed. To relieve pain and inflammation, medicine may be prescribed. These include aspirin and ibuprofen. If pain is severe, a strong anti-inflammatory called colchicine may be prescribed.

  • Treatment of the cause, if known. For instance, antibiotics may be prescribed. This is done if the cause is a bacterial infection.

  • Treatment of complications. Serious but uncommon complications can result from both acute and chronic pericarditis. These include:

    • Cardiac tamponade. Fluid builds up within the layers of the pericardium. This can keep the heart from working correctly. It and prevents the right amount of blood flow to the body. To treat this condition, a needle is inserted into the chest wall and between the layers of the pericardium to remove the extra fluid. Sometimes surgery may be done to remove a portion of the pericardium.

    • Constrictive pericarditis. Over time, scar-like tissue forms in the pericardium. The tissue prevents the heart from expanding enough when it beats. This keeps the heart from working correctly. Surgery to cut or remove the pericardium is the only treatment.

When should I call my healthcare provider?

Call your healthcare provider right away if you have any symptoms of pericarditis. This is especially important if you have chest pain. Without treatment, this condition can be life-threatening.

Online Medical Reviewer: Glenn Gandelman MD MPH
Online Medical Reviewer: Lu Cunningham RN BSN
Date Last Reviewed: 5/1/2016
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